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Quarterly Financial Data (unaudited) | 12 Months Ended
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Dec. 31, 2018
Quarterly Financial Data (unaudited) [Abstract] |
Quarterly Financial Data (unaudited) | Note 22. Quarterly Financial Data (unaudited)
|  | 2018 Quarters |
(millions of dollars, except per share data) |  | First |  |  | Second |  |  | Third |  |  | Fourth |
Net sales by segment |  |  |  |  |  |  |  |  |  |  |  |
Performance Materials segment |  | $ | 187.3 |  |  | $ | 214.5 |  |  | $ | 219.5 |  |  | $ | 206.8 |
Specialty Minerals segment |  |  | 149.6 |  |  |  | 150.9 |  |  |  | 146.3 |  |  |  | 142.5 |
Refractories segment |  |  | 75.3 |  |  |  | 79.6 |  |  |  | 79.1 |  |  |  | 77.9 |
Energy Services segment |  |  | 19.1 |  |  |  | 19.7 |  |  |  | 19.2 |  |  |  | 20.3 |
Net sales |  |  | 431.3 |  |  |  | 464.7 |  |  |  | 464.1 |  |  |  | 447.5 |
Gross profit |  |  | 113.5 |  |  |  | 115.9 |  |  |  | 119.2 |  |  |  | 112.8 |
Income from operations |  |  | 62.6 |  |  |  | 62.8 |  |  |  | 68.2 |  |  |  | 62.3 |
Consolidated net income |  |  | 41.1 |  |  |  | 45.2 |  |  |  | 42.9 |  |  |  | 44.0 |
Net income attributable to Minerals Technologies Inc. (MTI) |  |  | 39.9 |  |  |  | 44.1 |  |  |  | 41.9 |  |  |  | 43.1 |
Basic earnings per share attributable to MTI shareholders |  | $ | 1.13 |  |  | $ | 1.25 |  |  | $ | 1.19 |  |  | $ | 1.22 |
Diluted earnings per share attributable to MTI shareholders |  | $ | 1.12 |  |  | $ | 1.24 |  |  | $ | 1.18 |  |  | $ | 1.22 |
Market price range per share of common stock: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
High |  | $ | 76.95 |  |  | $ | 76.40 |  |  | $ | 77.75 |  |  | $ | $ 67.65 |
Low |  | $ | 66.10 |  |  | $ | 65.10 |  |  | $ | 65.75 |  |  | $ | $ 47.89 |
Close |  | $ | 66.95 |  |  | $ | 75.35 |  |  | $ | 67.60 |  |  | $ | $ 51.34 |
Dividends paid per common share |  | $ | 0.05 |  |  | $ | 0.05 |  |  | $ | 0.05 |  |  | $ | 0.05 |
|  | 2017 Quarters |
(millions of dollars, except per share data) |  | First |  |  | Second |  |  | Third |  |  | Fourth |
Net sales by segment |  |  |  |  |  |  |  |  |  |  |  |
Performance Materials segment |  | $ | 169.9 |  |  | $ | 180.3 |  |  | $ | 188.8 |  |  | $ | 195.8 |
Specialty Minerals segment |  |  | 146.2 |  |  |  | 147.0 |  |  |  | 147.7 |  |  |  | 143.9 |
Refractories segment |  |  | 70.2 |  |  |  | 68.9 |  |  |  | 69.0 |  |  |  | 71.3 |
Energy Services segment |  |  | 18.7 |  |  |  | 17.9 |  |  |  | 19.0 |  |  |  | 21.1 |
Net sales |  |  | 405.0 |  |  |  | 414.1 |  |  |  | 424.5 |  |  |  | 432.1 |
Gross profit |  |  | 113.7 |  |  |  | 119.7 |  |  |  | 119.3 |  |  |  | 114.5 |
Income from operations |  |  | 62.1 |  |  |  | 69.0 |  |  |  | 67.2 |  |  |  | 46.1 |
Consolidated net income |  |  | 35.6 |  |  |  | 43.8 |  |  |  | 42.8 |  |  |  | 76.7 |
Net income attributable to MTI |  |  | 34.6 |  |  |  | 43.0 |  |  |  | 41.7 |  |  |  | 75.8 |
Basic earnings per share attributable to MTI shareholders |  | $ | 0.99 |  |  | $ | 1.23 |  |  | $ | 1.18 |  |  | $ | 2.14 |
Diluted earnings per share attributable to MTI shareholders |  | $ | 0.97 |  |  | $ | 1.21 |  |  | $ | 1.17 |  |  | $ | 2.12 |
Market price range per share of common stock: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
High |  | $ | 83.70 |  |  | $ | 80.20 |  |  | $ | 75.60 |  |  | $ | 73.55 |
Low |  | $ | 72.20 |  |  | $ | 70.50 |  |  | $ | 62.95 |  |  | $ | 66.40 |
Close |  | $ | 76.60 |  |  | $ | 73.20 |  |  | $ | 70.65 |  |  | $ | 68.85 |
Dividends paid per common share |  | $ | 0.05 |  |  | $ | 0.05 |  |  | $ | 0.05 |  |  | $ | 0.05 |

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- Definition The entire disclosure for quarterly financial data. Includes, but is not limited to, tabular presentation of financial information for fiscal quarters, effect of year-end adjustments, and an explanation of matters or transactions that affect comparability of the information. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -URI http://asc.fasb.org/topic&trid=2126967 + Details
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